CN108035180A - A kind of method of papermaking magma mashing - Google Patents
A kind of method of papermaking magma mashing Download PDFInfo
- Publication number
- CN108035180A CN108035180A CN201711216199.1A CN201711216199A CN108035180A CN 108035180 A CN108035180 A CN 108035180A CN 201711216199 A CN201711216199 A CN 201711216199A CN 108035180 A CN108035180 A CN 108035180A
- Authority
- CN
- China
- Prior art keywords
- slurry
- mashing
- magma
- added
- sodium alginate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/005—Microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of method of papermaking magma mashing, it is related to paper for daily use technical field, comprises the following steps:(1)Mixing wood pulp is discongested with hydrabrusher;(2)Hemicellulase is added into the slurry discongested, is added in vacuum reaction kettle and handles;(3)Sodium alginate-modified attapulgite is added in pretreatment slurry, then carries out making a call to 2,000 2400 turns through PFI fiberizers;Papermaking magma methods of beating of the present invention, by the way that after enzymolysis processing is carried out to paper pulp using hemicellulase, sodium alginate-modified attapulgite is then added into paper pulp, then carries out PFI mills, can not only reduce energy consumption, improve yield, moreover it is possible to which fiber is modified.
Description
Technical field
The invention belongs to paper for daily use technical field, and in particular to a kind of method of papermaking magma mashing.
Background technology
Paper for daily use species currently on the market is more, and since the type that each producer uses is different, raw material are different, technique
Technology is different, and the product quality produced is uneven, and paper for daily use is the required article of daily life, such as roll web, meal
Towel paper and face tissue etc..China is paper production, consumption and import big country.The development maked rapid progress with paper for daily use industry with
And consumer is more and more stronger to the demand of high-quality paper for daily use, common paper for daily use can not meet the need of consumer
Ask.In order to reduce the production cost of factory, while plant produced benefit is improved, biology enzyme is used in more and more paper mills before mashing
Slurry is pre-processed, the energy immovable in various physical properties after slurry is copied into paper while in reducing pulping process
Consumption.Although the raw material of toilet paper selects hardwood pulp mostly, there are a small number of products also to add some pins to lift quality
Leaf wood pulp, since the beating degree of softwood pulp is difficult to improve, although having used biology enzyme auxiliary mashing in existing method, carries
Ascending effect and unobvious.
The content of the invention
The purpose of the present invention is for it is existing the problem of, there is provided a kind of method of papermaking magma mashing.
The present invention is achieved by the following technical solutions:
A kind of method of papermaking magma mashing, the mixing wood that magma raw material is mixed to get for 80% hardwood pulp and 20% softwood pulp
Slurry, methods of beating comprise the following steps:
(1)Mixing wood pulp is discongested with hydrabrusher, 40min is then stirred with 2000-2500r/min rotating speeds, is obtained
Slurry after discongesting;
(2)Hemicellulase is added into the slurry discongested, slurry temperature is heated to 30-35 DEG C, then adjusts slurry pH
To 5.5-6.0, when processing 5-8 is small, then the slurry after enzymolysis is added in vacuum reaction kettle again and handles 10-15min, handled
Temperature is 90-100 DEG C, is then taken out, cooled to room temperature, obtains pretreatment slurry;
(3)To step(2)In the sodium alginate-modified concave convex rod of its quality 0.15-0.3% is added in obtained pretreatment slurry
Soil, adjusts pretreatment slurry concentration to 10%, then carries out beating 2000-2400 turns through PFI fiberizers.
Further, the step(2)Middle hemicellulase additive amount is 0.10-0.12IU/g slurries.
Further, the step(2)It is middle to use mass fraction to adjust slurry pH for 5% citric acid solution.
Further, the step(2)Vacuum is 0.08MPa in middle vacuum reaction kettle.
Further, the step(3)PFI defibrination machine knives are away from 0.22cm.
Further, the step(3)In sodium alginate-modified preparation method of attapulgite be:
(1) sodium alginate is pressed into 30g:The ratio of 220mL is dissolved in the ethanol solution that mass fraction is 80%, is turned with 2000r/min
Speed stirring 15min, is then heated to 60 DEG C, insulation, obtains mixed solution;
(2) attapulgite is pressed into 120g:The ratio and step of 380mL(1)Obtained mixed solution mixing, adjusts the temperature to 45
DEG C, with 1800r/min rotating speeds stirring 2 it is small when, then, then add the polyvinyl alcohol of mixed solution quality 0.25%, continue to stir
30min, then carries out vacuum freeze drying, crushes, and crosses 1250 mesh sieves, and sodium alginate-modified attapulgite is made.
The present invention has the following advantages compared with prior art:Papermaking magma methods of beating of the present invention, by using half fiber
After the plain enzyme of dimension carries out enzymolysis processing to paper pulp, sodium alginate-modified attapulgite is then added into paper pulp, then carries out PFI mills,
Energy consumption can be not only reduced, improves yield, moreover it is possible to fiber is modified, defibrination is being carried out by sodium alginate-modified attapulgite
In effect to paper pulp, can effectively improve beating degree, ensure fibre strength, reduce power consumption during ton slurry mashing, reduce PFI
Fiberizer revolution, can reach higher beating degree with relatively low revolution;Methods of beating of the present invention by using 80% leaf wood
Slurry is mixed with 20% softwood pulp, the mashing processing by the method for the present invention, can significantly improve the drainage of fiber
Property, mashing property and mobility, while reduce energy consumption, improve size performance, so as to improve paper quality.
Embodiment
Embodiment 1
A kind of method of papermaking magma mashing, the mixing wood that magma raw material is mixed to get for 80% hardwood pulp and 20% softwood pulp
Slurry, methods of beating comprise the following steps:
(1)Mixing wood pulp is discongested with hydrabrusher, 40min is then stirred with 2000r/min rotating speeds, after being discongested
Slurry;
(2)Add hemicellulase into the slurry discongested, slurry temperature be heated to 30 DEG C, then adjust slurry pH to
5.5, when processing 5 is small, then the slurry after enzymolysis is added in vacuum reaction kettle again and handles 10min, treatment temperature is 90 DEG C,
Then take out, cooled to room temperature, obtains pretreatment slurry;
(3)To step(2)In the sodium alginate-modified attapulgite of its quality 0.15% is added in obtained pretreatment slurry, adjust
Pretreatment slurry concentration is saved to 10%, then carries out making a call to 2000 turns through PFI fiberizers.
Further, the step(2)Middle hemicellulase additive amount is 0.10-0.12IU/g slurries.
Further, the step(2)It is middle to use mass fraction to adjust slurry pH for 5% citric acid solution.
Further, the step(2)Vacuum is 0.08MPa in middle vacuum reaction kettle.
Further, the step(3)PFI defibrination machine knives are away from 0.22cm.
Further, the step(3)In sodium alginate-modified preparation method of attapulgite be:
(1) sodium alginate is pressed into 30g:The ratio of 220mL is dissolved in the ethanol solution that mass fraction is 80%, is turned with 2000r/min
Speed stirring 15min, is then heated to 60 DEG C, insulation, obtains mixed solution;
(2) attapulgite is pressed into 120g:The ratio and step of 380mL(1)Obtained mixed solution mixing, adjusts the temperature to 45
DEG C, with 1800r/min rotating speeds stirring 2 it is small when, then, then add the polyvinyl alcohol of mixed solution quality 0.25%, continue to stir
30min, then carries out vacuum freeze drying, crushes, and crosses 1250 mesh sieves, and sodium alginate-modified attapulgite is made.
Embodiment 2
A kind of method of papermaking magma mashing, the mixing wood that magma raw material is mixed to get for 80% hardwood pulp and 20% softwood pulp
Slurry, methods of beating comprise the following steps:
(1)Mixing wood pulp is discongested with hydrabrusher, 40min is then stirred with 2500r/min rotating speeds, after being discongested
Slurry;
(2)Hemicellulase is added into the slurry discongested, slurry temperature is heated to 30-35 DEG C, then adjusts slurry pH
To 6.0, when processing 8 is small, then the slurry after enzymolysis is added in vacuum reaction kettle again and handles 15min, treatment temperature 100
DEG C, then take out, cooled to room temperature, obtains pretreatment slurry;
(3)To step(2)In the sodium alginate-modified attapulgite of its quality 0.3% is added in obtained pretreatment slurry, adjust
Then pretreatment slurry concentration carries out making a call to 2400 turns to 10% through PFI fiberizers.
Further, the step(2)Middle hemicellulase additive amount is 0.12IU/g slurries.
Further, the step(2)It is middle to use mass fraction to adjust slurry pH for 5% citric acid solution.
Further, the step(2)Vacuum is 0.08MPa in middle vacuum reaction kettle.
Further, the step(3)PFI defibrination machine knives are away from 0.22cm.
Further, the step(3)In sodium alginate-modified preparation method of attapulgite be:
(1) sodium alginate is pressed into 30g:The ratio of 220mL is dissolved in the ethanol solution that mass fraction is 80%, is turned with 2000r/min
Speed stirring 15min, is then heated to 60 DEG C, insulation, obtains mixed solution;
(2) attapulgite is pressed into 120g:The ratio and step of 380mL(1)Obtained mixed solution mixing, adjusts the temperature to 45
DEG C, with 1800r/min rotating speeds stirring 2 it is small when, then, then add the polyvinyl alcohol of mixed solution quality 0.25%, continue to stir
30min, then carries out vacuum freeze drying, crushes, and crosses 1250 mesh sieves, and sodium alginate-modified attapulgite is made.
Embodiment 3
A kind of method of papermaking magma mashing, the mixing wood that magma raw material is mixed to get for 80% hardwood pulp and 20% softwood pulp
Slurry, methods of beating comprise the following steps:
(1)Mixing wood pulp is discongested with hydrabrusher, 40min is then stirred with 2200r/min rotating speeds, after being discongested
Slurry;
(2)Add hemicellulase into the slurry discongested, slurry temperature be heated to 33 DEG C, then adjust slurry pH to
5.8, when processing 6 is small, then the slurry after enzymolysis is added in vacuum reaction kettle again and handles 10-15min, treatment temperature is
90-100 DEG C, then take out, cooled to room temperature, obtains pretreatment slurry;
(3)To step(2)In the sodium alginate-modified attapulgite of its quality 0.2% is added in obtained pretreatment slurry, adjust
Then pretreatment slurry concentration carries out making a call to 2200 turns to 10% through PFI fiberizers.
Further, the step(2)Middle hemicellulase additive amount is 0.11IU/g slurries.
Further, the step(2)It is middle to use mass fraction to adjust slurry pH for 5% citric acid solution.
Further, the step(2)Vacuum is 0.08MPa in middle vacuum reaction kettle.
Further, the step(3)PFI defibrination machine knives are away from 0.22cm.
Further, the step(3)In sodium alginate-modified preparation method of attapulgite be:
(1) sodium alginate is pressed into 30g:The ratio of 220mL is dissolved in the ethanol solution that mass fraction is 80%, is turned with 2000r/min
Speed stirring 15min, is then heated to 60 DEG C, insulation, obtains mixed solution;
(2) attapulgite is pressed into 120g:The ratio and step of 380mL(1)Obtained mixed solution mixing, adjusts the temperature to 45
DEG C, with 1800r/min rotating speeds stirring 2 it is small when, then, then add the polyvinyl alcohol of mixed solution quality 0.25%, continue to stir
30min, then carries out vacuum freeze drying, crushes, and crosses 1250 mesh sieves, and sodium alginate-modified attapulgite is made.
Comparative example 1:Step is differed only in embodiment 1(3)In do not add sodium alginate-modified attapulgite.
Comparative example 2:Step is differed only in embodiment 1(3)In sodium alginate-modified attapulgite to replace with equivalent general
Logical attapulgite.
Comparative example 3:Step is differed only in embodiment 1(2)In without vacuum reaction kettle handle.
Experiment:
Experiment:Initial beating degree is measured to embodiment and comparative example slurry before mashing, is then beaten, is beaten using PFI mills
Gap is 0.2mm, and it is 30 ° of SR to be beaten to beating degree, contrasts the PFI mill revolutions of needs, and raw material uses embodiment and comparative example
Sulfate bleaching needle-point leaf pulp raw material proportioning:
Table 1
As can be seen from Table 1, being beaten to identical beating degree, the present invention only needs less PFI revolutions, and energy consumption is lower;
Further experiment, after embodiment and the mashing of comparative example method, by quantitative 60g/m2 handsheets, every group is manufactured paper with pulp 5;It is dry,
Equilibrium water conten, surveys physical property(Tear index):
Table 2
As can be seen from Table 2, the sodium alginate-modified attapulgite that the present invention adds has the tear-resistant index of paper notable
Raising, vacuum reaction kettle processing is carried out after enzymolysis processing, tear-resistant index can be improved to a certain degree.
Claims (6)
- A kind of 1. method of papermaking magma mashing, it is characterised in that magma raw material mixes for 80% hardwood pulp with 20% softwood pulp Obtained mixing wood pulp is closed, methods of beating comprises the following steps:(1)Mixing wood pulp is discongested with hydrabrusher, 40min is then stirred with 2000-2500r/min rotating speeds, is obtained Slurry after discongesting;(2)Hemicellulase is added into the slurry discongested, slurry temperature is heated to 30-35 DEG C, then adjusts slurry pH To 5.5-6.0, when processing 5-8 is small, then the slurry after enzymolysis is added in vacuum reaction kettle again and handles 10-15min, handled Temperature is 90-100 DEG C, is then taken out, cooled to room temperature, obtains pretreatment slurry;(3)To step(2)In the sodium alginate-modified concave convex rod of its quality 0.15-0.3% is added in obtained pretreatment slurry Soil, adjusts pretreatment slurry concentration to 10%, then carries out beating 2000-2400 turns through PFI fiberizers.
- A kind of 2. method of papermaking magma mashing as claimed in claim 1, it is characterised in that the step(2)Middle hemicellulose Plain enzyme additive amount is 0.10-0.12IU/g slurries.
- A kind of 3. method of papermaking magma mashing as claimed in claim 1, it is characterised in that the step(2)It is middle to use matter Measure the citric acid solution that fraction is 5% and adjust slurry pH.
- A kind of 4. method of papermaking magma mashing as claimed in claim 1, it is characterised in that the step(2)Middle vacuum is anti- It is 0.08MPa to answer vacuum in kettle.
- A kind of 5. method of papermaking magma mashing as claimed in claim 1, it is characterised in that the step(3)PFI fiberizers Knife is away from 0.22cm.
- A kind of 6. method of papermaking magma mashing as claimed in claim 1, it is characterised in that the step(3)Middle alginic acid The attapulgite modified preparation method of sodium is:(1) sodium alginate is pressed into 30g:The ratio of 220mL is dissolved in the ethanol solution that mass fraction is 80%, is turned with 2000r/min Speed stirring 15min, is then heated to 60 DEG C, insulation, obtains mixed solution;(2) attapulgite is pressed into 120g:The ratio and step of 380mL(1)Obtained mixed solution mixing, adjusts the temperature to 45 DEG C, with 1800r/min rotating speeds stirring 2 it is small when, then, then add the polyvinyl alcohol of mixed solution quality 0.25%, continue to stir 30min, then carries out vacuum freeze drying, crushes, and crosses 1250 mesh sieves, and sodium alginate-modified attapulgite is made.
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CN201711216199.1A CN108035180A (en) | 2017-11-28 | 2017-11-28 | A kind of method of papermaking magma mashing |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111851124A (en) * | 2020-07-29 | 2020-10-30 | 广东叶囵生物科技发展有限公司 | Paper raw pulp |
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